Researchers release new batch of SCADA exploits

http://static.arstechnica.net/assets/2012/04/schneider-modicon-quantum-plc2-4f7d

Researchers have released two new exploits that attack common design vulnerabilities in a computer component used to control critical infrastructure, such as refineries and factories.

The exploits would allow someone to hack the system in a manner similar to how the Stuxnet worm attacked nuclear centrifuges in Iran, a hack that stunned the security world with its sophistication and ability to use digital code to create damage in the physical world. 

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Story added 6. April 2012, content source with full text you can find at link above.